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Forefront Security for Exchange stopping mail flow when enabled

I've two new Hub Transport Servers with Forefront for Exchange installed.

One is fine, but the other, when Forefront scanning is enabled, stops mail flow and messages get stuck in the queue.

Both are bare bones installations installed on 2008 R2.

Anyone have any ideas?

Thanks.
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Sunny-Brussels
Asked:
Sunny-Brussels
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1 Solution
 
viveksahuCommented:
Hi,

"If you are using an Edge Transport or Hub Transport to route e-mail into your Exchange environment, you may enter the IP address of the Edge Transport server so that Forefront Security for Exchange Server will treat all mail coming from that server as inbound when determining which filters and scan jobs to utilize for a message.  If you do not enter the IP address of your Edge Transport or Hub Transport, Forefront Security for Exchange Server will use its internal logic to determine if messages are inbound or not.  IP addresses should be entered as a semicolon delimited list with no spaces."

So, this is basically for categorizing mail as inbound.  I don't believe this will help your issue.  Forefront is not port specific.  Then only thing to consider as far as ports is for engine updates.  If you are using the http link to update engines, just make sure you have the http port open.  
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viveksahuCommented:
Hi,

"If you are using an Edge Transport or Hub Transport to route e-mail into your Exchange environment, you may enter the IP address of the Edge Transport server so that Forefront Security for Exchange Server will treat all mail coming from that server as inbound when determining which filters and scan jobs to utilize for a message.  If you do not enter the IP address of your Edge Transport or Hub Transport, Forefront Security for Exchange Server will use its internal logic to determine if messages are inbound or not.  IP addresses should be entered as a semicolon delimited list with no spaces."

So, this is basically for categorizing mail as inbound.  I don't believe this will help your issue.  Forefront is not port specific.  Then only thing to consider as far as ports is for engine updates.  If you are using the http link to update engines, just make sure you have the http port open.  

Also check for

http://technet.microsoft.com/en-us/library/bb795067.aspx

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Sunny-BrusselsAuthor Commented:
It wasn't the ports, we had a Microsoft guy tell us that we had to uninstall and re-install.
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Sunny-BrusselsAuthor Commented:
No other solutions
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